Gables with insulating substances



(No ModelJ W. R; PATTERSON.

APPARATUS FOR FILLING GABLES WITH INSULATING SUBSTANCES. No. 284,226. Al Patented S'ept.- 4, 1883.

i I E/KM insulation in a cable in which theseinsulating a steam chamberor jacket, A. Connected-with UNITED STATES 'PATENT OFFICE.

, WILLIAM R. PATTERSON, or CHICAGO, InL1no1s,AssIcNon TO THE, wnsrnnnELEoTnIoooMrANY, or SAMEPLACE.

APPARATUS FOR FILLING ChBiLS WHH INSULATING SUBSTANCES.

SPECIFICATION forming part of Letters Patent No. 284,226,da tedSeptember 4, 18 83. I Application filed February 13, 1883. (No modem Toall whm'n it may concern:

Be it known that I, WILLIAM .R. PATTER- soN, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented a certain new. and

useful Improvement in Apparatus for Filling Gables with InsulatingSubstances, of which the following is a full, clear, concise, and exactdescription, reference being had to the accomk ro r specification.

l mately mixed with gas-is introduced into the cable in a molten stateunder pressure. The insulating substance which I have preferably used inthese cables is'paraffine mixed with carbonic dioxide. Paraffine andother insu lators of this class, as generally manufactured and sold,contain more or less moisture. This.

is also true of air or gas under ordinaryconditions. In order to obtaina high degree of substances are used, it is essential that this moistureberemoved before the insulating substance is introduced into the cable.By

my present invention I have sought to provide an apparatus adapted toremove the moisture from insulating substances used for filling cables,said apparatus being also adapted and combinations of scribed andclaimed.

11 p to force the said insulating substance into a cablein a moltenstate and under pressure. My invention consists inthe constructionparts, as hereinafter debod-ying my invention. i,

In the said drawing, A represents a tightly: closed reservoir, which Itermthe chargingchamber, provided at the bottom with a 1 thecharging-chamber Aby' a pipe, a,'-.pro vided with a. valve, a1, is anopen reservoir,

B, which I termfthe evaporating-kettle. Thisevaporating-kettle B isprovided with a.

steam-jacket, B, which extends to the top of the said kettle, so thatwhen steam is admitted into said steam-jacket the evaporating-kettle iskept evenly heated throughout.

0' represents a carbonic-dioxide generator, which consists of amixing-chamber, b, and an acidechamber, 0, arranged in the ordinarymanner, the mixing-chamber I) being provided with the customaryagitator, b, and the acid-' chamber being supplied with a valve, 0,adapted to open aid close the aperture lead ing to the mixing-chamber,in thensual way.

From the top of the mixing-chamber .b a

pipe, bi, leads into a drying-chamber, d. i This drying-chamber d isdivided by a perforated calcium or other suitable absorbent. b from themixing-chamber b enters the lower compartment, (1 A connection is'madefrom this pipe b to the upper part of the acid-chamher 0, to equalizethe pressure therein, and

also to a pressure-gage in the ordinary manner.

From the top of the upper compartment, d, of the dryingchamber (l apipe, 0, leads to the charging-chamber A; This pipe 6, entering at thetop, extends to the bottom of said chargingchamber A, and there connectswith a coil of perforated pipe, 6.

The cable to be filled is attached at oneend to a discharge-pipe, f,which leads from near 5' 7 false bottom into two compartments, d d the lupper one, at, of which contains chloride of t The pipe the bottom ofthe charging-chamber A. This cable is preferably coiled on a reel, D,and

placed in an oven, E, during the filling process, the said ovenbeingkept at a temperature above the melting-point'of the insulator used.

The operation of filling a cable with this apparatus is as follows: Theparaffineor other 1 The moisture contained prevents-moisture fromcollecting on the sides a of the kettle and running back into theinsulator. When the moisture has thus bcenall evaporated, the insulatorin theevaporatingkettle is drawn off through pipe a into thecharging-chamber A. Here, by means of the steam-jacket A, it isretained'at a temperature above the melting-point of the insulator,preferably at 150 to 200. Gas is now generated in the generator byallowing the acid contained in the acid-chamber c to enter themixing-chamber b, which contains asuitable carbonate, a uniformproduction of the gas being secured by the agitator 1/. The gas thusgenerated passes from the mixing-chamber b into the drying-chamber d,where it parts with any moisture it contains, and then passes throughpipe 0 to the charging-chamber A, en tering said charging-chamberthrough the coil of perforatedpipe e. in the bottom thereof. The gas isthus forced into the charging-chamber in a thoroughly dry condition,and, rising through the melted insulator, becomes intimately mixedtherewith. When sufficient pressure is obtained in the charging-chamber,

the discharge-pipef is opened and the insuvaporized in said chamber,and, having no means of. exit except through the discharge.

pipe f, would finally be discharged into the cable, with damagingresults. Besides, if the insulator in the charging-chamber were heatedto a sufficient, temperature to vaporize the moisture contained therein,the said insulator would be so expanded that it would not take up thequantity of gas which is desired. The temperature in thecharging-chamber is therefore kept just above the melting-point of theinsulator therein, 7

In addition to the perforation in the coil 0 at the bottom of thecharging-chamber, I pro- -vide the pipe 6 with one or more smallperforations, e, above the insulator contained in said chamber. This isfor the purpose of equalizing the pressure of the gas in the said pipe6; otherwise, if for any reason the pressure should be lowered in thegenerator, the insulator from the charging-chamber would be forced backinto the pipe, 6 and the drying-chamber d, where it would-solidify,causing very serious inconvenience.

. I have shown the evaporating kettle B placed above thecharging-chamber A and connected thereto by a pipe, so that the molteninsulator will run from the kettle to said ment, but it is obvious thatit may be arranged in any'other suitable manner.

All the pipes and connections are provided with suitable cocks orvalves, so that the entire apparatus may be kept under perfect controland regulated to suit varying conditions.

The various chambers of the generator are provided with suitableopenings for the,admission and removal of the material used there in,and all of its parts may be readily cleansed. By reason of thelowercompartment, (1 in the drying-chamber d, in case the lower portionof the absorbent becomes saturated, the moistat a temperature above themelting-point of 8 5 said insulator, of a generator adapted to supplygas under pressure to said charging-chamber, substantially as specified.

2. The combination, with a charging-chamber provided with adischargepipe leading from near the bottom thereof, said chargingchamberbeing adapted to retain an. insulator under pressure at a temperatureabove the melting-point of said insulator, of an evaporating-kettle,substantially as and for the purpose specified.

3. The combination, with a charging-cham-- ber adapted to retain aninsulator in a molten state under pressure, saidcharging-chamber beingprovided with a dischargepipeleading from near the bottom thereof, of agenerator.

adapted to supply gas under pressure to said charging-chamber, saidgenerator being provided with a drying-chamber for removing the moisturefrom the gas, substantially as and for the purpose set forth.

4. Asteam-jacketed charging-chamber provided with a discharge pipeleading from near the bottom thereof, in combination with a generatoradapted to supply gas under pressure to said charging-chamber,substantially as and for the purpose specified.

5. The combination, with a steam-jacketed IIO ' charging-chamberprovided with a dischargepipe leading from near the bottom thereof, of 1I 5 a steam -j ac'keted evaporating-kettle, substantially as and for thepurpose set forth.

6. In an apparatus for filling cables," the a under' pressure, saidcharging-chamber and.

generator being connected by a pipe which extends to the bottom of saidcharging-chamber, whereby the gas from said generator is caused 'to passthrough the melted insulator in the charging-chamber, substantially asthe purpose set forth.

8. The combination, with a charging-cham-:

and for "ber proyided with a discharge-pipe leading from near the bottomthereof, of an evaporating-kettle and a generator, said generator beingprovided with a drying-chamber, substantially as and for the purpose setforth.

9. The combination of a steam-jacketed I chargingchamber provided with adischargepipe leading from near the bottom thereof, a?

(steam-jacketed evaporating kettle placed 10 a, a 3 to said chambenby apipe, to, and a generator i for generating gas under pressure, saidgenerlabovesaid charging-chamber and connected ator being provided withadrying-chamber I a adapted to remove the moisture from the gas, flI5 I aa 1,10. The combination of the charging-oham- :ber A, evaporating-kettleB, generator O, and

substantially as specified.

oven E, substantially as and for the purpose specified. v a

120K 1 11. [The combination, with a charging-chamher adapted to containinsulating substance in amolten state, and a generatorfor supplying gasunder pressure, of a pipe for conveying the gas from the generator tothe charginga chamber, said pipe being adapted to discharge :the gasunder the surface of the insulating substance in the charging-chamber,and being a also provided with one or more perforations which open intosaid charging-chamber above the surface of the insulating substancetherein,

said pipe, substantially as and for the purpose set forth. a

In witness ,WhBIBOf I hereunto subscribe my" name this 8th day ofFebruary, A. D. 1883.

PAULA. STALEY, A. D. Con.

WILLIAM PATTERSON. a

Witnesses:

3o wherebythe pressure of the gas is equalized in

